Peters



"Unirse STATES Artnr trice.

FRED W. HUBBARD, OF COLUMBUS, OHIO, ASSIGNOR TO THE KILBOURNE di JACOBSMANUFACTURING COMPANY, OF SAME PLACE.

--Ro'AD-SCRAPER. A'

SPECIFICATION forming part of Letters Patent No. 359,537, dated March15, 1887.

Application filed September 13, 1886. Serial No. 213,420.

.To all whom t may concern:

Be it known that I, FRED IV. HUBBARD, a citizen of the United States,residing at Columbus, county of Franklin, and State of Ohio, haveinvented certain new and useful Improvements in Road-Scrapers, of whichthe following is a specification.

-My invention relates more especially to those'wheeled s'crapers orexcavators in which the bowl is hung from a cranked axle, and is raisedby the team and man loading, so as to be supported by the axle and clearof the ground by holding back the wheels throughy the medium of asuitable lever connected both to the bowl and the axle.

My invention has for its object to prevent the tilting of the bowl whilebeing filled; and

link 4, bo wlv 5, standards 6, and tongue 7 may `be of the same generalconstruction as shown in wheel-scrapers of this class. Thedifficulty ofthe construction shown in these Scrapers, however, is that the bowl isapt to tilt and dump the earth while being filled. The point ofattachment of the tongue-braces to the bowl being high up on the bowl,in order to make the dumping easywhen in the position shown in Fig. II,will, itis readily seen, have a tendency to tilt the bowl when inposition shown in Fig. I. This is especially apt to be the case shouldthe nose of the bowl strike a rock or hard place :in the ground. Inorder to prevent this evil, I provide a, hook, S, pivoted to the bowl at9 near its nose and adapted to hook over a pin, bar, or projection, 10,on the tongue-braces.

11 is a rod pivotally connected both to the` hook 8, near its upper end,and to the lever 3 at a point above the pivotal connection of the latterto the bowl. The effect of this arrangement is suoli that when thebowlis in loading position, as shown in Fig. I, andthe lever is thereforeraised to approximately vertical position, the hook 8 is thrown over thepin 10. This prevents the tilting of the bowl. When lever 3 is beingthrown back to the po- (No model.)

sition shown in Fig. II, in order to allow the team to raise the bowl tothe carrying position, the hook 8 is disengaged from the pin 10automatically, so as to present no further obstruction to the tilting ofthe bowl.

As here shown, the means of pivotal connection of rod 11 with lever 3 isby aslot, 12, on the rod and a pin carried by said lever pro- `jectingthrough said slot. It is plain that the slot and pin can be on the otherend of the rod l1, or the latter can be used without slot in either end.The purpose of such a connection is to allow a slight movement of thelever 3 before the hook S is detached from its pin, so that there willbe no danger of the tilting of the lbowl beforeY it is raised from theground. It is apparent that the rod 11 can be connected to any part setin action by movement of the lever 3 instead of directly to the leveritself. For example, it can be connected with the link 4 or the axle 2.I am aware that wheelscrapers have been provided with a hook dependingfrom and pivoted to the tongue-braces, with a stud or projection at theside ofthe bowlnear the bottom, with which the hook engages when thelever-bar is raised, to which latter the hook is pivotally connected bymeans of a link; but this is quite different (from my invention, inwhich the hook is pivoted to the bowl and engages a stud on thetongue-braces. This arrangement brings the hook clear of allobstructions which might tend to disengage it; also, when the scraper isdumped, the hooks, being elevated away above the ground, willnot catchon the sod, roots, stumps, and other obstructions, which are liable tobend the hooks out of shape.

Having thus described my invention, the following is what I claim as newtherein'and desire to secure by Letters Patent:

In a road-scraper, the combination of the bowl, axle, and wheels, andlever pivoted to the bowl for raising and lowering the latter, a hookpivoted to the bowl, a projection on the draft-braces wherewith the hookengages, and a rod connecting the hook with the lever at a point abovethe pivotal connection of they

